G4OK : Interface between Geant4 and embedded Opticks

G4Opticks
    central interface

G4OpticksCerenkovStep
G4OpticksScintillationStep
    enums for the 4*6 values of the genstep : huh not used with CCollector
    approach used in G4Opticks ?

• G4OpticksHit.hh
  • G4OpticksHit
  • G4OpticksHitExtra